06-04-2014, 12:40 PM
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Bandsaw Blade Repair Jig
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 Thanks given by: stevec
06-04-2014, 08:27 PM
Thanks for the heads up on the aluminum bar Tom and the teeth set, never gave those a thought.
tackit, proud to be a member of MetalworkingFun Forum since May 2014.
I have been as busy as a one arm wallpaper hanger but I finally got the 20 degree angle band saw scarfing jig finished.
I used a piece of 3/4 aluminum square stock and some 1/4" aluminum plate I had on hand to build it. I used 5 minute epoxy to hold the 3/4 X 3/8 Neodymium magnets in their mounting holes. They hold the blade like it was clamped onto the fence, so strong in fact the blade has to be lifted and levered off the fence, it can't be pulled straight off. The pic of the magnets embedded in the aluminum shows them grimy. I don't know where that dirt came from, I didn't notice any dirt on the blade try piece when I put it on the fence, I guess it could be rust.. I was in a hurry to finish, I didn't notice the grime was so bad or I would have cleaned it off before I took the pictures. Next pics will be of the blade silver soldered together. Thanks for looking. 
tackit, proud to be a member of MetalworkingFun Forum since May 2014.
06-26-2014, 07:32 AM
Magnets seem like a good idea. I wonder if one could get magnets that can be turned by a knob to neutralize them, like those for dial indicator bases.
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.
(06-26-2014, 07:32 AM)stevec Wrote: Magnets seem like a good idea. I wonder if one could get magnets that can be turned by a knob to neutralize them, like those for dial indicator bases. Stevec , these magnets are so strong it was hard to turn the fences 1/4" pivot bolt, my 1/4 " combo wrench was constantly being pulled toward the magnets. I think electric magnets this size would work but I don't know if they make them this small. I do have welding magnets that switch on and off, but I never looked into how the switch works.. I assume the switch pulls the magnets away from the frame, it would be nice, I have arthritis in my hands and it's painful to wrangle the blade free of the magnets. I suppose if the fence was made from 2" wide aluminum a mechanism could be made to retract them.
tackit, proud to be a member of MetalworkingFun Forum since May 2014.
06-26-2014, 08:46 AM
I believe the "on/off knob on dial indicator stands some how rotates one of the magnets so they oppose each other.
No electricity involved.
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.
06-26-2014, 09:29 AM
(06-26-2014, 08:46 AM)stevec Wrote: I believe the "on/off knob on dial indicator stands some how rotates one of the magnets so they oppose each other. Interesting... I tried that with mine, the opposing force was so strong I almost couldn't push them together, they kept wanting to move to the opposite side. I got the side of my finger pinched between them and I thought for sure I was going to get a blood blister.
tackit, proud to be a member of MetalworkingFun Forum since May 2014.
06-26-2014, 11:25 AM
(06-03-2014, 08:05 PM)tackit Wrote: Just finished this bandsaw blade jig this afternoon. I still need to build a jig that will grind both sides of a blade at the same angle for silver brazing. the way we do here is to reverse the blade ,once cut to length and grind across the end with them clamped together . That way you get an exact match ." the teeth should be facing the opposite direction when clamped " hope this helps , Ken
kenne, proud to be a member of MetalworkingFun Forum since Jun 2014.
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